This circuit was found in a Texas Instruments documentation from the 1980s. The circuit monitors engine temperature by warning of engine warm-up and warning when the fan is on.
This circuit uses a JFET, which may be of the type BF244 or BF245 and a PNP bipolar that may be...
This traditional high sensitivity voltmeter circuit using a FET can employ the MPF102 or BF245 in its...
This circuit is used as a magnetic field sensor and is based on a Texas Instruments HaII Effect...